Stigmatomma trigonignathum

Stigmatomma trigonignathum
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Genus:	Stigmatomma
Species:	S. trigonignathum
Binomial name
	Stigmatomma trigonignathum; (Brown, 1949)
Synonyms
	Amblyopone trigonignathumBrown, 1949;

Last updated August 03, 2025

Stigmatomma trigonignathum is a species of ant in the subfamily Amblyoponinae. It is considered one of the rarest ants in the world, only known from one specimen collected in 1948^[1] and another observed in 2008. Both records are from the Piedmont region of North Carolina.^[2]

Description

The 1948 type specimen is 6.12 mm long, including mandibles but excluding stinger. It is mostly uniform ferruginous in color.^[1]

References

1 2 Brown, W. L. (1949). "A new American Amblyopone, with notes on the genus (Hymenoptera: Formicidae)" (PDF). Psyche: A Journal of Entomology. 56 (2): 81–88. doi: 10.1155/1949/67378 .
↑ Guénard, Benoit; McCaffrey, Katherine A.; Lucky, Andrea; Dunn, Rob R. (2012). "Ants of North Carolina: An updated list (Hymenoptera: Formicidae)". Zootaxa. 3552: 1. doi:10.11646/zootaxa.3552.1.1.

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[:0-1] 1 2 Brown, W. L. (1949). "A new American Amblyopone, with notes on the genus (Hymenoptera: Formicidae)" (PDF). Psyche: A Journal of Entomology. 56 (2): 81–88. doi: 10.1155/1949/67378 .

[2] Guénard, Benoit; McCaffrey, Katherine A.; Lucky, Andrea; Dunn, Rob R. (2012). "Ants of North Carolina: An updated list (Hymenoptera: Formicidae)". Zootaxa. 3552: 1. doi:10.11646/zootaxa.3552.1.1.

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